In the Warrior series, the medicine cats are the ones who use herbs and such to heal and treat the sick and wounded. The herbs listed below are all the known herbs from the Warrior series. There are actually a whole lot more herbs, but it would be tedious and time-consuming, so I didn't put it here. If you want to check out all of the herbs, click the button. (It will probably have ads) Some of these are paraphrased, but you will find a few that are straight from teh website.
Moss
Moss can be used to soak up liquids and change bedding.
Borage
Borage can be chewed and/or eaten to soothe bellyaches, bring down fevers, produce better milk for queens, and relieves tight chests.
Catmint
Catmint can be eaten to help cure greencough and whitecough. However, it can be dangerous if taken in high dosages.
Yarrow
Can be eaten to make a cat vomit up toxins. It can also be chewed into a poultice to place on a wound to extract poison. The ointment will also heal cracked pads.
Dock Leaves
Dock leaves can soothe scratches, soothe sore pads, and be placed in nests to ease the pain of wounds.
Chervil
Chervil can be chewed into a poultice and be applied to a wound to treat it. It can also be used for bellyaches.
Thyme
Thyme is chewed to relieve anxiety in cats, calm nervousness, and calm cats who are in shock.
Juniper Berries
Juniper berries soothe bellyaches, give strength, and helps troubled breathing. It is also used to calm cats.
Citronella (this is not mentioned in Warriors ever, but I had found out from the book The Thirteenth Cat that it can be used to wake a cat up)
Honey
Honey soothes infections, is a great remedy for smoke-damaged or sore throats, helps cats swallow other herb mixtures, helps soothe coughing, and gives energy.
Celandine
Celandine is used to soothe weak and/or damaged eyes. You do this by crushing it and trickling it into the eye of a cat.
Alder Bark
Alder bark can be chewed to ease toothaches.
Catchweed
Catchweed is used to attach herb poultice to a wound so that the wound will not easily fall off without hurting the cat.
Bindweed
Bindweed is used to bind sticks together so that you can easily connect sticks to help heal a broken leg.
Burdock Root
Burdock root can be used to heal rat bites especially when infected.
Blackberry
Blackberry leaves are used to ease the pain of bee stings.
Chamomile
Chamomile strengthens the heart and soothes the mind.
Comfrey
Comfrey helps repairs broken bones or soothes wounds. Also used for wrenched claws.
Cobweb
Cobweb can be used to bandage poultice to a wound.
Chickweed
Treats greencough, though works less than catmint.
Coltsfoot
Eases breathing, as well as cracked or sore pads.
Poppy
Poppy seeds ease pain, but should not be used on nursing queens unless absolutely necessary.
Daisy Leaves
Daisy leaves ease the pain of aching joints.
Goldenrod
Goldenrod is good for healing wounds.
Fennel
Fennel helps ease pain in the hips.
Feverfew
Reduces fever and chills, also heals aches and pains, especially headaches.
Lavender
Cures fever and chills, also hides the scent of death.
Mint
Mint is rubbed on a body to hide the scent of death.
Marigold
Stops infection, bleeding, and used for inflammation and stiff joints.
Mouse Bile
Mouse bile is the only known way to get rid of ticks.
Tansy
Cures coughs, can be used to cure wounds and poison, and is extremely dangerous to pregnant cats.
Watermint
Eases the pain that comes from bellyache.
Traveling Herbs
Daisy
Sorrel
Burnet
Chamomile
These traveling herbs are to take when a cat is going on a journey or long walk and is eaten to suppress hunger and help strengthen the cat's stamina.
Poisons
Deathberries, also known as "yew," can kill an animal within minutes if eaten. However, it is used as a last resort when an animal needs to kill an infection, and when that happens, the seed should carefully be removed and the berry's flesh should be consumed.
Foxglove seeds have no medicinal effect, but when consumed can lead to coma, paralysis, heart failure, or even death.
Holly berries also have no medicinal effect, but if consumed can lead to vomiting, loss of appetite, or belly pain. If taken in a dose too big or a cat is very young or very old, it is very deadly.